package com.liu.webstore.controller;

import com.google.code.kaptcha.Producer;
import com.liu.webstore.entity.User;
import com.liu.webstore.service.UserService;
import com.liu.webstore.enums.StatusEnum;
import com.liu.webstore.util.RedisKeyUtil;
import com.liu.webstore.util.VerifyCodeUtil;
import com.liu.webstore.util.WebstoreUtil;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * @Author LiuYumei
 * @Date 2022/7/17 17:39
 */
@Controller
public class LoginController {
    private static final Logger log = LoggerFactory.getLogger(LoginController.class);

    @Value("server.servlet.context-path")
    private String              contextPath;

    @Autowired
    private Producer            producer;

    @Autowired
    private UserService         userService;

    @Autowired
    private RedisTemplate redisTemplate;

    @GetMapping("/register")
    public String getRegisterPage() {
        return "/site/register";
    }

    @GetMapping("/login")
    public String getLoginPage() {
        return "/site/login";
    }

    @PostMapping("/register")
    public String register(Model model, User user) {
        Map<String, Object> map = userService.register(user);
        if (null == map || map.size() == 0) {
            model.addAttribute("msg", "注册成功！我们已经向您的邮箱发送了一封激活邮件，请尽快激活！");
            model.addAttribute("target", "/home/index");
            return "/site/operate-result";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            model.addAttribute("emailMsg", map.get("emailMsg"));
            return "/site/register";
        }
    }

    @GetMapping("/activation/{userId}/{code}")
    public String activation(Model model, @PathVariable("userId")
    int userId, @PathVariable("code")
    String code) {
        int result = userService.activation(userId, code);
        if (result == StatusEnum.ACTIVATION_SUCCESS.getStatus()) {
            model.addAttribute("msg", "您的账号已激活成功，可以正常使用！");
            model.addAttribute("target", "/login");
        } else if (result == StatusEnum.ACTIVATION_REPEAT.getStatus()) {
            model.addAttribute("msg", "无效操作，该账号已激活！");
            model.addAttribute("target", "/home/index");
        } else {
            model.addAttribute("msg", "激活失败，您提供的激活码不正确！");
            model.addAttribute("target", "/home/index");
        }
        return "/site/operate-result";
    }

    //@GetMapping("/getVerifyCode")
    //public void getVerifyCode(HttpServletResponse response, HttpServletRequest request) {
    //    int width = 200;
    //    int height = 80;
    //    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    //    String randomText = VerifyCodeUtil.drewRandomText(width, height, image);
    //    request.getSession().setAttribute("verifyCode", randomText);
    //    response.setContentType("image/png");
    //    try (OutputStream os = response.getOutputStream()) {
    //        ImageIO.write(image, "png", os);
    //        os.flush();
    //    } catch (IOException e) {
    //        log.error("响应验证码失败：" + e.getMessage());
    //    }
    //}

    /**
     * redis存验证码
     */
    @GetMapping("/getVerifyCode")
    public void getVerifyCode(HttpServletResponse response, HttpServletRequest request) {
        int width = 200;
        int height = 80;
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        String randomText = VerifyCodeUtil.drewRandomText(width, height, image);

        // 验证码的归属
        String kaptchaOwner = WebstoreUtil.getUuid();
        Cookie cookie = new Cookie("kaptchaOwner", kaptchaOwner);
        cookie.setMaxAge(60);
        cookie.setPath(contextPath);
        response.addCookie(cookie);
        // 将验证码存到redis
        String kaptchaKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
        redisTemplate.opsForValue().set(kaptchaKey,randomText, 60, TimeUnit.SECONDS);

        response.setContentType("image/png");
        try (OutputStream os = response.getOutputStream()) {
            ImageIO.write(image, "png", os);
            os.flush();
        } catch (IOException e) {
            log.error("响应验证码失败：" + e.getMessage());
        }
    }

    @GetMapping("/kaptcha")
    public void getKaptcha(HttpServletResponse response, HttpSession session) {
        String text = producer.createText();
        BufferedImage image = producer.createImage(text);
        session.setAttribute("kaptcha", text);
        response.setContentType("image/png");
        try (ServletOutputStream os = response.getOutputStream()) {
            ImageIO.write(image, "png", os);
            os.flush();
        } catch (IOException e) {
            log.error("响应验证码失败：" + e.getMessage());
        }
    }

    //@PostMapping("/login")
    //public String login(String username, String password, String code, boolean rememberMe,
    //                    Model model, HttpServletResponse response, HttpSession session) {
    //    // 验证码验证
    //    String verifyCode = (String) session.getAttribute("verifyCode");
    //    if (StringUtils.isEmpty(verifyCode) || !code.equalsIgnoreCase(verifyCode)) {
    //        model.addAttribute("codeMsg", "验证码不正确");
    //        return "/site/login";
    //    }
    //    // 账号密码验证
    //    int expiredSeconds = rememberMe ? StatusEnum.REMEMBER_EXPIRED_TIME.getStatus()
    //            : StatusEnum.DEFAULT_EXPIRED_TIME.getStatus();
    //    Map<String, Object> map = userService.login(username, password, expiredSeconds);
    //    if (map.containsKey("ticket")) {
    //        Cookie cookie = new Cookie("ticket", map.get("ticket").toString());
    //        cookie.setPath(contextPath);
    //        cookie.setMaxAge(expiredSeconds);
    //        response.addCookie(cookie);
    //        return "redirect:/home/index";
    //    } else {
    //        model.addAttribute("usernameMsg", map.get("usernameMsg"));
    //        model.addAttribute("passwordMsg", map.get("passwordMsg"));
    //        model.addAttribute("errorMsg", map.get("errorMsg"));
    //        return "/site/login";
    //    }
    //}

    /**
     * redis获取验证码登录
     */
    @PostMapping("/login")
    public String login(String username, String password, String code, boolean rememberMe,
                        Model model, HttpServletResponse response, @CookieValue("kaptchaOwner") String kaptchaOwner) {
        // 验证码验证
        String verifyCode = null;
        if (StringUtils.isNotBlank(kaptchaOwner)) {
            String kaptchaKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
            verifyCode = (String) redisTemplate.opsForValue().get(kaptchaKey);
        }
        if (StringUtils.isEmpty(verifyCode) || !code.equalsIgnoreCase(verifyCode)) {
            model.addAttribute("codeMsg", "验证码不正确");
            return "/site/login";
        }
        // 账号密码验证
        int expiredSeconds = rememberMe ? StatusEnum.REMEMBER_EXPIRED_TIME.getStatus()
                : StatusEnum.DEFAULT_EXPIRED_TIME.getStatus();
        Map<String, Object> map = userService.login(username, password, expiredSeconds);
        if (map.containsKey("ticket")) {
            Cookie cookie = new Cookie("ticket", map.get("ticket").toString());
            cookie.setPath(contextPath);
            cookie.setMaxAge(expiredSeconds);
            response.addCookie(cookie);
            return "redirect:/home/index";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            model.addAttribute("errorMsg", map.get("errorMsg"));
            return "/site/login";
        }
    }

    @GetMapping("/logout")
    public String logout(@CookieValue("ticket") String ticket) {
        userService.logout(ticket);
        // 清理认证
        SecurityContextHolder.clearContext();
        // 重定向默认get请求
        return "redirect:/login";
    }
}
